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Pediatric Data Tables
Pregnancy Data Tables
What Is PedNSS/PNSS?
 What Is PedNSS?
What is PNSS?
Why was PNSS created?
Who participates in PNSS?
What data are collected and analyzed?
How is PNSS data used?
 PedNSS Health Indicators
 PNSS Health Indicators
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What is PedNSS/PNSS? - What is PNSS?
What data are collected and analyzed?

The PNSS collects data for demographic, maternal health and behavioral, smoking/drinking, and infant health indicators from women during prenatal and postpartum clinic visits in public health programs.

Health and Demographic Indicators
Demographic Indicators Source of data (WIC, MCH, etc), race/ethnicity, woman’s age, education, % poverty level, program participation and migrant status
Maternal Health
Prepregnancy BMI, maternal weight gain
anemia, parity, interpregnancy interval,
diabetes during pregnancy and
hypertension during pregnancy
Maternal Behavioral
Medical care, WIC enrollment and
multivitamin consumption
Smoking, smoking changes, smoking in household and drinking
Infant Health
Birthweight, preterm birth, full term low birthweight and breastfeeding initiation

Data Collection Procedures and Dissemination

During the prenatal clinic visit, demographic and maternal health and behavioral data are collected and at the postpartum clinic visit, infant health data describing the birth outcome are obtained. Each woman contributes one record representing one pregnancy. The PNSS record that includes both prenatal and postpartum data is collected in the clinic and aggregated at the contributor or state level and then submitted to CDC on a quarterly basis. A report is generated annually that includes births for the calendar year, January 1 through December 31. The annual report includes a series of tables that summarize demographic, behavioral and nutrition-related health indicators for each contributing state, tribal government, or U.S. territory. CDC calculates the distribution of demographic indicators and prevalence of maternal and infant nutrition related health indicators and prenatal behaviors. Some health indicators are further stratified by race/ethnicity, age and education. In addition, geographic comparisons and trend analysis are provided. Each contributor or state is encouraged to receive clinic, county, region or metropolitan area level reports for dissemination to local program managers. Dissemination of PNSS annual report enables program managers to monitor and identify prevalent nutrition problems and adverse behaviors in their communities.

PNSS Data Quality

CDC evaluates the completeness and quality of the data submitted from contributors and provides them with a data quality report. CDC sends a data quality report to the contributing state following receipt of the quarterly submissions and after all data for the reporting period have been submitted. The report details missing and miscoded data, Biologically Implausible Values (BIVs) as well as other data quality edits. The data quality report also contains edits pertaining to record volume, problems with duplicate records, and critical errors. In addition, data quality parameters have been developed for each data item based on a variety of statistical measures including expected data distributions, standard deviations, and z-scores. Contributor data must meet specific data quality and completeness criteria to be included in the national PNSS report.

Limitations of the PNSS Data

PNSS is a program-based surveillance system that includes data routinely collected from federally funded public health programs serving low-income pregnant women. Contributors voluntarily participate in PNSS. Not all contributors for a specific public health program participate in PNSS, for example not all states, U.S. territories, and tribal governments that provide the WIC program participate in PNSS; therefore the national PNSS report is not representative of all WIC programs. Similarly, PNSS is not representative of all low-income pregnant women or pregnant women in the general population. It is representative of the population served by the public health program submitting the surveillance data. It is essential data for use in planning, implementing, monitoring, and evaluating the nutritional status of women served by a specific public health program.



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United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
Division of Nutrition and Physical Activity

This page last updated November 04, 2009

United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
Division of Nutrition and Physical Activity